Arcade Video game question..

soooo....Back in the day when I was a kid (we'll say 10-15 years ago) I Remeber going to the mall with my dad and playing a first person shooter...it could have up to 3 players and the machine guns didn't move from where they were mounted except up down side to side etc. I remeber some parts of the game looked really realistic were other parts looked rather cartoonish... You had a side button on the gun that fired explosive disks much in the fashion of a gernade except insta boom.

I don't remeber the plot all that much but I remeber a factory where women were bound up and having some kinda goo/oil poured over them and it turned them into masked monsters with green blood and you had to rescue them... I also remeber going into an office building and finding a nerd behind a desk (big bi-focals, button up shirt, pocket protector, comic in hand) see's us grabs this conviently located box of gernades from the top of the desk and hides behind the counter......after several minutes he eventually killed us even though we had completely destoried his desk (as best as we could and had gotten all the hidden things in the screen we could find) next week we came back and dad notices the giant metal banner/sign that was over the desk with the company logo. He shoots the chains and the sign catchs a thrown grenade and boom dead nerd....

Another part we were in a jungle being chased by a near invincible bio-weapon with an ant looking head. We manage to get it to a bridge where it kills us as we burned through our quarters....a few weeks later we come back and shoot out the support beams on the bridge and it falls to its death...

Why these long bits of text you ask? Well I have had 2 major arcade games I have always wanted to rediscover. I have rediscovered one Sunset Riders (dealed with cowboys made it alot easier as not many cowboy arcade games) This one however....I dunno where to look or ask anymore. So here I sit at my desk asking if anyone here knows what it is.